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H. SIMON. BURIFIER FOR MIDDLINGS.

No. 601,817. Patented Apr. 5, 1898.

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No. 601,817: Plfa;t=*nted Apr; 5, 1898.

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W EU67IZ107? 4 fliiorzzejJl UNITED STATES PATENT OFFICE.

IIENRY SIMON, OF MANCHESTER, ENGLAND.

PURIFIE R FOR MIDDLINGS.

SPECIFICATION forming part of Letters Patent No. 601,817, dated April 5,1898.

Application filed September 3, 1896. Serial ll'o. 604,696. (No model.)

T at whom it may concern.-

Be it known that I, HENRY SIMON, a citizen of England, residing at Mountstreet, Manchester, in the county of Lancaster, England, have inventedcertain new and useful Improvements in Purifiers for Middlings and otherPulverulent Cereal Products, of which the following is a specification.

In purifiers for middlings and other pulverulent cereal products as theyare usually constructed it is difficult to obtain access to the sieve orto the channels which collect the fine particles raised by theair-current, and the windows often provided for inspection are generallyso obscured by dust deposited on them that it is impossible to see theinterior.

Now my invention relates to the construction and arrangement of thedust-collecting channels in such a manner as to lessen the quantity ofdust raised within the machine,

, to render the air issuing from the machine dustless, to keep thewindows for inspection clean, or nearly so, and to give facility foraccess to the sieve. I shall describe the construction and arrangementswhich I adopt for this purpose, referring to the accompanying drawings.

Figure lis a longitudinal section, and Fig. 2 is a transverse section,of a purifier according to my invention. Fig. 3 is a plan of the grid ofdust collecting channels arranged above the sieve. Fig. 4 is a sectionon the line Z Z of Fig. 2 of the inclined channels in the chambers abovethe sieve. Fig. 5 is a perspective view of several of thecollectingchannels. view showinga section of the grid raised. Fig. 7 isa vertical cross-section, on an enlarged scale, of the sieve andadjacent parts. Fig. 8 is a detached view of the removable piece whichis taken out of the partition when the grid has to be raised.

A is the silk or. sieve which is caused to oscillate and is providedwith feed and discharge arrangements in the usual way. The frame whichcarries the silk is made witha recess or receiving-channel B at its oneside, and over the silk is arranged a grid of trans verse channels 0,eachlhaving a fiat bottom parallel and very near to the surface of thesilk, the upper side of the channel being of Fig. 6 is a sectionalperspective.

grid of channels vibrate each, of these wires oscillates to and fro inits channel, keeping the particles in it in motion and preventing themfrom adhering. The lower cross-wire c prevents the longitudinal wire 0from jumping out of the channel. The'space above the silk is, as usual,divided by partitions P into a number of compartments D, communicatingby valved openings E with upper hoppershaped compartments G, whichcommunicate with the section of the fan F. The grid of channels G isdivided into as many sections as there are compartments D, each sectionbeing hinged to the side of the channel B, so that it can be raised tothe position indicated by the dotted. lines 0, Fig. 2, so as to givefree access to the silk from the side window H, which can be opened forthat purpose. In

parts of the partitions P) serve as stops,

against which the upper edges of the removable lower parts 10 bear whenthese parts are in'place. When it is desired to raise a section of thegrid of channels 0, the windowH is opened and the attendant, taking holdof handles p,withdraws the movable parts p of the partitions and removesthem through the window, the grid-section being thus left free to beraised. a

In each of the compartments D are fixed several rows of steeply-inclinedshallow channels K, with narrow passages between them so arranged thatthe air-currents ascending to the upper compartments G as they passbetween the channels of one tier are deflected by the channels of thenext higher tier, and

as they expand'laterally over each tier they 7 deposit in the channels Ksuch dust or fine particles as may be suspended in them. The mattersthus deposited slide down the channels K into the collecting-channelB,whence they, as well as the matters received from the channels 0, aredelivered at the discharge end of the machine. I have shown the channelsG directly transverse. Theymight, however, be more or less diagonallyinclined, their ends which discharge into the side channel B beingnearer the delivery end of the machine than their other ends.

The air,which is almost dustless after passing the channels K, passesthrough the openings E,which are regulated by valves, into the upperhopper-shaped compartments G, and, expanding in them, deposits such dustas may be still carried by it,and this descends through openings L atthe bottom of the compartments G and falls into the inclined channels K.Each of the openings L is provided with a slide,which usually closes theopening and is withdrawn only when there is an accumulation of depositin the compartment.

Having thus described the nature of my invention and the best means Iknow for carrying the same into practical effect, I claim- 1. Thecombination with the shaking-sieve, of transverse dustcollectingchannels arranged above the same and hinged to one of the longitudinalsides of the sieve-frame, whereby the channels can be swung up whenaccess is required to the sieve, substantially as set forth.

2. The combination with the shaking-sieve having a longitudinaldust-channel along one of its sides, of a grid of transversedust-collecting channels arranged above the sieve with their lower sidesin proximity to the sieve and their upper sides sloping toward saidlongitudinal dust-channel, said grid of channels being composed ofsections which are arranged side by side from the head to the tail ofthe sieve and hinged to the sieveframe on the side on which saidlongitudi-' nal channel is arranged, substantially as set forth.

3. The combination with the inclosing casing and the shaking-sievehaving a longitudinal dust-channel along one of its sides, of a grid oftransverse dust-collecting channels attached to the sieve and arrangedin prox; imity to the upper side of the sifting-surface, with theirupper sides sloping toward said longitudinal channel, and stationarysteeplyinclined dust-collecting channels extending across the interiorof said casing and arranged with their lower ends over said longitudinalchannel and with their higher ends over the opposite side of the sieve,substantially as set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 18th day of August, A. D.1896.

HENRY SIMON. lVitnesses:

HAROLD WoRsLnY, FRANCIS WILLIAM GUARD.

